18QHTF21-81.300-OE

Overview

The 18QHTF21-81.300-OE is a clock oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 81.3 MHz and utilizes LVCMOS output logic. The device is designed for low voltage applications, requiring a supply voltage of 1.8V. It features an enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This surface-mount technology ensures compatibility with automated assembly processes.

Feature Summary

• Supports LVCMOS output logic for standard digital interfacing
• Includes enable and disable functionality for power management
• Utilizes a compact 4-SMD no-lead surface mount package

Applications

• General purpose clocking for embedded systems
• Digital signal processing circuits
• Communication interface modules

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your system design before procurement. Confirm that the 1.8V supply voltage aligns with your target platform's power rails. Ensure the PCB footprint matches the 2.0x1.6mm SMD package dimensions provided in the official datasheet to prevent assembly issues.

Selection Notes

Select this component when a precise 81.3 MHz clock source is required for LVCMOS-compatible logic families. Consider the enable pin feature if dynamic power saving is necessary for the application. Evaluate the small form factor suitability for space-constrained designs compared to larger through-hole or leaded alternatives.

Part Context

This oscillator belongs to the 18QHTF series from Mercury Electronics, which focuses on surface-mount crystal oscillators. The series offers various frequencies and voltages, expanding beyond traditional leaded packages. This specific model represents the company's shift toward miniaturized, low-voltage solutions for modern electronics manufacturing.

Replacement Considerations

Direct substitutes include other 81.3 MHz LVCMOS oscillators in 2016 packages from manufacturers like Epson or NDK. Verify electrical parameters such as phase noise and jitter specifications to ensure functional equivalence in high-speed timing applications.